[Cbe-oss-dev] [RFC 0/3] powerpc: memory copy routines tweaked for Cell

[Mark Nelson]

On Fri, 20 Jun 2008 12:53:49 am Olof Johansson wrote:
> 
> On Jun 19, 2008, at 8:59 AM, Arnd Bergmann wrote:
> 
> > I assume it has suffered from bitrot and nobody tried to do better
> > since the Power3 days. AFAICT, it hasn't seen any update since your
> > original Power4 version from 2002.
> 
> I've got an out-of-tree optimized version for pa6t as well that I  
> haven't bothered posting yet.
> 
> The real pain with the usercopy code is all the exception cases. If  
> anyone has made a test harness to make sure they're all right, please  
> do post it for others to use as well...

I second that request - I verified (to the best that I could) with
pen and paper that the exception handling on this new version
is correct but it would be great to have a better way to test it.

Mark